1
dc2199bcfa
DEMO MANUAL DC2199B-C
DESCRIPTION
LTC3765/LTC3766
300W Isolated Forward Converter
with Synchronous Rectification
Demonstration circuit 2199B-C is a 300W isolated forward
converter with synchronous rectification featuring the
LTC3765/LTC3766 chip-set. It produces a regulated 56V,
5.4A output from an input voltage range of 36V to 60V.
This circuit was designed to demonstrate the high levels
of performance, efficiency, and small solution size attain-
able using these parts in an active-clamp-reset forward
converter power supply, suitable for telecom, industrial,
and other applications. It has a 4.7in2 solution footprint
area. Synchronous rectification helps to attain an efficiency
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
PERFORMANCE SUMMARY
approaching 96%. Secondary-side control eliminates
complex opto-coupler feedback, providing fast transient
response with minimum output capacitance. For other
output requirements, see the LTC3766 data sheet or
contact the LT C sales.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2199B-C
Specifications are at TA = 25°C
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input Supply Range 36 60 V
VOUT Output Voltage 56.0 V
IOUT Output Current Range, Continuous 200LFM 0 5.4 A
fSW Switching (Clock) Frequency 200 kHz
VOUT(P-P) Output Ripple VIN = 48V, IOUT = 30A (20MHz BW) 100 mVP-P
IREG Output Regulation Line and Load (36VIN to 60VIN, 0AOUT to 5.4AOUT) ±0.02 %
POUT/PIN Efficiency (See Figure 3) VIN =48V, IOUT = 5.4A 95.2 %
Isolation Basic 1500 VDC
Approximate Solution Size Component Area × Top Component Height 4.7in2 × 0.6 Inches
2
dc2199bcfa
DEMO MANUAL DC2199B-C
OPERATING PRINCIPLES
QUICK START PROCEDURE
The LTC3765 active clamp forward controller and gate
driver is used on the primary and provides start-up, gate
drive, and protection functions. Once start-up is accom-
plished, the LTC3766 high efficiency, secondary-side
synchronous forward controller takes over, and provides
the LTC3765 with timing information and bias power
through a small pulse transformer.
When input voltage is applied, the LTC3765 commences
soft-start of the output voltage. When the output reaches
the RUN threshold, the LTC3766 comes alive and takes
control by sending encoded PWM gate pulses to the
LTC3765 through T2. These pulses also provide primary
bias power efficiently over a wide input voltage range.
The transition from primary to secondary control occurs
at some fraction of the nominal output voltage. From then
on, operation and design is reduced to that of a simple
Demonstration circuit 2199B-C is easy to set up to evalu-
ate the performance of the LTC3765/LTC3766. Refer to
Figure 1 for proper measurement equipment setup and
follow the procedure below:
NOTE: When measuring the output voltage ripple, care must
be taken to avoid a long ground lead on the oscilloscope
probe. Measure the output voltage ripple by touching the
probe tip and ground ring directly across the last output
capacitor as shown in Figure 1.
1. Set an input power supply that is capable of 36V to 60V
to 36V. Then turn off the supply.
2. Direct an airflow of 200LFM across the unit for sustained
operation at full load.
3. With power off, connect the supply to the input terminals
+VIN and –VIN.
a. Input voltages lower than 36V can keep the converter
from turning on due to the undervoltage lockout
feature of the LTC3765/LTC3766.
buck converter. Secondary control eliminates delays, tames
large-signal overshoot, and reduces output capacitance
needed to meet transient response requirements.
An optional LC filter stage on the input lowers RMS input
current. The filter must have output impedance that is less
than the converter input impedance to assure stability.
This may require a damping impedance, which is provided
by R1. (See Linear Technology Application Note 19 for a
discussion of input filter stability.) R1 is coupled through
a tiny 2mm × 2mm inductor L1, and provides damping
with arbitrarily low source impedance. For bench testing,
an electrolytic capacitor has been added at the input ter-
minals to provide suitable ripple current capability. The
values selected have a filter resonant frequency that is
below the converter switching frequency, thus avoiding
high circulating currents in the filter.
b. If efficiency measurements are desired, an ammeter
capable of measuring 10ADC or a resistor shunt can
be put in series with the input supply in order to
measure the DC2199B-C’s input current.
c. A voltmeter with a capability of measuring at least
60V can be placed across the input terminals in order
to get an accurate input voltage measurement.
4. Turn on the power at the input.
NOTE: Make sure that the input voltage never ex-
ceeds 60V.
5. Check for the proper output voltage of 56V. Turn off
the power at the input.
6. Once the proper output voltages are established, con-
nect a variable load capable of sinking 5.4A at 56V to
the output terminals +VOUT and –VOUT. Set the current
for 0A.
a. If efficiency measurements are desired, an ammeter
or a resistor shunt that is capable of handling 5.4ADC
can be put in series with the output load in order to
measure the DC2199B-C’s output current.
3
dc2199bcfa
DEMO MANUAL DC2199B-C
QUICK START PROCEDURE
b. A voltmeter with a capability of measuring at least 56V
can be placed across the output terminals in order
to get an accurate output voltage measurement.
7. Turn on the power at the input.
NOTE. If there is no output, temporarily disconnect the
load to make sure that the load is not set too high.
8. Once the proper output voltage is again established,
adjust the load within the operating range and observe
the output voltage regulation, ripple voltage, efficiency
and other desired parameters.
Figure 1. Proper Measurement Equipment Setup
Figure 2. Efficiency and Power Dissipation
+–
IIN
VIN
V
IN
+
–
IOUT
VOUT
+
–
+
–
+ –
+–
LOAD
LOAD CURRENT (A)
EFFICIENCY
POWER DISSIPATION (W)
0.96
0.9
0.94
0.94
0.86
0.88
0.84
0.82
0.8
0.78
0.76
16
13
15
14
11
12
10
9
8
7
6
dc2199bc F02
0 31 2 64 5
Pd, 48VIN
60VIN
48VIN
36VIN
4
dc2199bcfa
DEMO MANUAL DC2199B-C
QUICK START PROCEDURE
Figure 3. Output Ripple at 48VIN and 5.4AOUT (100mV, 2µs/DIV, 20MHz)
Figure 4. Transient Response Waveform at 48VIN and 2.7A to 5.4A to 2.7AOUT (2A, 1V, 200µs/DIV)
5
dc2199bcfa
DEMO MANUAL DC2199B-C
QUICK START PROCEDURE
Figure 5. Thermal Map, Front Side at 48VIN and 5.4AOUT (TA = 25°C, 200LFM)
Figure 6. Thermal Map, Back Side at 48VIN and 5.4AOUT (TA = 25°C, 200LFM)
6
dc2199bcfa
DEMO MANUAL DC2199B-C
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
1 2 C1, C22 Cap., Alum., Elect., 33µF, 80V, CAP-10x10 PANASONIC, EEHZA1K330P
2 5 C2, C3, C4, C5, C6, C34 CAP., X7R, 4.7µF, 100V, 10%,1210 MURATA, GRM32DC72A475KE01L
3 1 C10 CAP., X7R, 4.7nF, 630V, 10%,1206 MURATA, GRM31A7U2J472KW31
4 1 C11 CAP., X7R, 0.015µF, 25V, 10%, 0603 AVX, 06033C153KAT2A
5 2 C24, C71 CAP., X7R, 1.0µF, 16V, 10%, 0805 MURATA, GRM21BR71C105KA01
6 2 C25, C26 Cap., Alum., Elect., 33µF, 63V, CAP-8x10 PANASONIC, EEHZA1J330P
7 1 C30 CAP., X7R, 2200pF, 250V, 10%,1812 MURATA, GA343QR7GD222KW01L
8 1 C51 CAP., C0G, 220pF, 630V, 5%,1206 MURATA, GRM31A5C2J221JW01
9 4 C55, C73, C80, C119 CAP., X7R, 1nF, 25V, 10%, 0603 MURATA, GRM188R71E102KA01
10 1 C66 CAP., X7R, 0.047µF, 200V, X7R, 10%, 1206 MURATA, GRM31CR72D473KW03
11 2 C72, C102 CAP., X7R, 0.1µF, 25V, 10%, 0805 AVX, 08053C104KAT2A
12 1 C75 CAP., NPO, 100pF, 25V, 5%, 0603 AVX, 06033A101JAT2A
13 1 C76 CAP., X7R, 3.3nF, 25V, 10%, 0603 AVX, 06033C332KAT2A
14 1 C77 CAP., X7R, 10µF, 25V, 10%, 1206 AVX, 12063C106KAT2A
15 1 C78 CAP., NPO, 0.033µF, 25V, 5%, 0805 TDK, TDK, C2012C0G1E333J125AA
16 1 C79 CAP., X7R, 4.7nF, 25V, 10%, 0603 MURATA, GRM188R71E472KA01
17 1 C101 CAP., NPO, 220pF, 25V, 5%, 0603 AVX, 06033A221JAT2A
18 1 C103 CAP., NPO, 1000pF, 25V, 5%, 0603 AVX, 06033A102JAT2A
19 1 C105 CAP., X7R, 0.22µF, 16V, 10%, 0603 MURATA, GRM188R71C224KA01
20 1 C106 CAP., COG, 150pF, 250V, 5%, 0603 TDK, C1608C0G2E151J080AA
21 1 C111 CAP., X7R, 0.22µF,50V, 10%, 0805 AVX, 08055C224KAT2A
22 1 C112 CAP., X7R, 0.22µF, 250V, 10%, 1206/1210 TDK C3225X7R2E224K
23 1 C113 CAP., X7R, 0.033µF, 25V, 10%, 0603 AVX, 06033C333KAT2A
24 1 C116 CAP., X7R, 4.7µF, 25V,10%,1206 AVX, 12063C475KAT2A
25 1 C118 CAP., NPO, 470pF, 5%, 0603 AVX, 06033A471JAT2A
26 2 D1,D34 DIODE ULTRA FAST 1A 200V SMP VISHAY, ES1PD-M3 / 84A
27 2 D29, D30 DIODE SCHOTTKY 60V 0.5A, SOT23 DIODES INC, ZHCS506TA
28 2 D37, D38 Diode, BAS21, SOT23 DIODES INC., BAS21-13-F
29 1 D40 DIODE, 1N4148WS, SOD323 VISHAY, 1N4148WS-E3-08
30 1 D41 DIODE, TVS,170V, SMB FAIRCHILD, SMBJ170A
31 1 D42 DIODE, ZENER, 27V, SOD323 DIODES INC., BZT52C27S-7-F
32 1 L1 INDUCTOR, 1.0µH, 20% COILCRAFT, XPL2010-102ML
33 1 L2 INDUCTOR, 2.0µH, 20% VISHAY, IHLP4040DZER2R0M11
34 1 L3 INDUCTOR, 33µH, 10% Wurth, 7443643300
35 1 L4 INDUCTOR, 680µH, DO1606T COILTRONICS, SD25-681
36 2 Q8, Q9 MOSFET, N-CH 150V, POWERPAK-SO-8 INFINEON, BSC190N15NS3 G
37 2 Q12, Q13 MOSFET, N-CH, 120V, POWERPAK-SO-8 VISHAY, Si7190DP
38 2 Q14, Q15 MOSFET, N-CH, 120V, POWERPAK-SO-8 VISHAY, Si7172DP
39 1 Q27 TRANS., NPN, 60V, 1A, SOT-89 DIODES INC., FCX491TA
40 1 Q28 MOSFET, N-CH, SUPER, SOT-6 FAIRCHILD, FDC2512-NL
41 1 Q29 MOSFET, P-CH, IRF6217, POWERPAK-SO-8 IR, IRF6217TRPBF
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dc2199bcfa
DEMO MANUAL DC2199B-C
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
42 1 R1 RES., CHIP, 0.33, 1/4W, 5%, 2512 PANASONIC, ERJ-1TRQJR33U
43 1 R7 DIODE SCHOTTKY 45V 0.5A, SOD323 CENTRAL SEMI., CMDSH05-45
44 2 R4, R5 RES., CHIP, 33.2K, 1W, 1%, 2512 PANASONIC, ERJ-1TYF3322U
45 1 R18 RES., 95.3K, 1/8W, 1%, 0805 VISHAY, CRCW080595K3FKEA
46 1 R22 RES., 3.48K, 1/16W, 1%, 0603 VISHAY, CRCW06033K48FKEA
47 2 R23, R24 RES., CHIP, 51, 1/4W, 5%, 1206 VISHAY, CRCW120651R0JKEA
48 1 R29 RES., CHIP, 100K, 1/8W, 5%, 0805 VISHAY, CRCW0805100KJNEA
49 1 R41 RES., CHIP, 56.2K, 1/16W, 1%, 0603 VISHAY, CRCW060356K2FKEA
50 1 R42 RES., CHIP, 1K, 1/16W, 1%, 0603 VISHAY, CRCW06031K00FKEA
51 1 R46 RES., CHIP, 604, 1/16W, 1%, 0603 VISHAY, CRCW0603604RFKEA
52 1 R53 RES., CHIP, 6.8, 1/2W, 1%, 1206 PANASONIC, ERJ-8RQF6R8V
53 1 R68 RES., CHIP, 2.15K, 1/16W, 1%, 0603 VISHAY, CRCW06032K15FKEA
54 1 R69 RES., CHIP, 46.4K, 1/16W, 1%, 0603 VISHAY, CRCW060346K4FKEA
55 2 R75, R77 RES., CHIP, 6.81K, 1/2W, 1%, 1210 VISHAY, CRCW12106K81FKEA
56 6 R101, R106, R107, R148, R149, R151 RES., CHIP, 100, 1/16W, 1%, 0603 VISHAY, CRCW0603100RFKEA
57 1 R102 RES., CHIP, 0.008, 3W, 1%, 1225 SUSUMU, KRL6432D-M-R008-F-T5
58 1 R108 RES., CHIP, 2.37K, 1/4W, 1%, 1206 VISHAY, CRCW12062K37FKEA
59 1 R109 RES., CHIP, 10K, 1/16W, 1%, 0603 VISHAY, CRCW060310K0FKEA
60 1 R110 RES., CHIP, 1.20, 1/2W, 1%, 1206 SUSUMU, RL1632S-1R20-F
61 1 R114 RES., CHIP, 28.7K, 1/16W, 1%, 0603 VISHAY, CRCW060328K7FKEA
62 1 R115 RES., CHIP, 49.9K, 1/4W, 1%,1206 VISHAY, CRCW120649K9FKEA
63 1 R117 RES., CHIP, 12.7K, 1/16W, 1%, 0603 VISHAY, CRCW060312K7FKEA
64 1 R118 RES., CHIP, 681K, 1/16W, 1%, 0603 VISHAY, CRCW0603681KFKEA
65 1 R121 RES., CHIP, 133K, 1/16W, 1%, 0603 VISHAY, CRCW0603133KFKEA
66 1 R123 RES., CHIP, 39.2K, 1/16W, 1%, 0603 VISHAY, CRCW060339K2FKEA
67 1 R125 RES., CHIP, 17.4K, 1/16W, 1%, 0603 VISHAY, CRCW060317K4FKEA
68 1 R127 RES., CHIP, 10K, 1/4W, 1%, 1206 VISHAY, CRCW120610K0FKEA
69 1 R136 RES., CHIP, 0.004, 1W, 1%, 1225 SUSUMU, KRL6432D-M-R004-F-T5
70 1 R137 RES., CHIP, 10K, 1/4W, 5%, 1206 VISHAY, CRCW120610K0JKEA
71 1 R139 RES., CHIP, 26.7K, 1/16W, 1%, 0603 VISHAY, CRCW060326K7FKEA
72 1 R140 RES., CHIP, 178, 1/8W, 1%, 0805 PANASONIC, ERJ-6ENF1780V
73 1 R150 RES., CHIP, 14.3K, 1/16W, 1%, 0603 VISHAY, CRCW060314K3FKEA
74 1 R153 RES., CHIP, 7.5K, 1/16W, 5%, 0603 VISHAY, CRCW06037K50JKEA
75 1 R154 RES., CHIP, 2.2, 1/4W, 5%, 1206 VISHAY, CRCW12062R20JKEA
76 1 T1 TRANSFORMER, 4T:4T:2T CHAMPS TECH., P26R6-0410-S02
77 1 T2 TRANSFORMER, 1.25:1 PULSE, PA3493NL
78 1 U1 I.C. LTC3765EMSE, MSOP-16 PIN LINEAR TECH., LTC3765EMSE#PBF
79 1 U2 I.C. LTC3766EGN, SSOP-GN28 LINEAR TECH., LTC3766EGN#PBF
8
dc2199bcfa
DEMO MANUAL DC2199B-C
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Additional Demo Board Circuit Components
1 0 C7, C31, C33, C68 CAP., OPT, 7343 OPT
2 0 C8, C9, C18, C19, C12, C13, C14, C16, C20,
C70
CAP., OPT, 0603 OPT
3 0 C17, C69 CAP., OPT,1206 OPT
4 0 C21, C15, C114 CAP., OPT, 0805 OPT
5 0 C23 CAP., OPT, CAP-SVPF-E12 OPT
6 1 C74 CAP, 0 0HM, JUMPER, 0603 VISHAY, CRCW06030000Z0EA
7 0 D2, D4, D35 DIODE, OPT, SOD323 OPT
8 0 D27, D28 DIODE, OPT, SOT23 OPT
9 0 Q1, Q2 MOSFET, OPT, SOT23-6 OPT
10 0 Q3 MOSFET, OPT, SOT23 OPT
11 0 Q4 MOSFET, OPT, D-PAK OPT
12 0 Q31 TRANS, OPT, SOT23 OPT
13 0 Q11, Q23, Q24 MOSFET, OPT, POWERPAK-SO-8 OPT
15 7 R2, R3, R8, R43, R49, R103, R111, R112,
R122, R146
RES., CHIP, 0 OHM, 0603 VISHAY, CRCW06030000Z0EA
14 0 R6, R9, R11, R12, R19, R25, R26, R27, R28,
R30, R31, R32, R33, R34, R35, R113, R119,
R120, R124, R126, R138, R147
RES., OPT, 0603 OPT
17 1 R10 RES., CHIP, 0.00 OHM, 1225 TEPRO, RN5326
16 0 R13, R14, R15 RES., OPT, 2512 OPT
18 0 R17, R51, R52, R116 RES., OPT,1206 OPT
19 0 R76, R84, R152 RES., OPT, 0805 OPT
20 0 T3 TRANSFORMER, 1:100, CT02-100 OPT
21 0 U3 I.C. OPT, SO16 OPT
Hardware: For Demo Board Only
1 4 E1, E2, E3, E4 TESTPOINT, TURRET, .094" MILL-MAX, 2501-2-00-80-00-00-07-0
2 3 E5, E6, E7 TESTPOINT, TURRET, .061" MILL-MAX, 2308-2-00-80-00-00-07-0
30 J1 HEADER, OPT, 2X7PIN, 0.079CC OPT, MOLEX, 87331-1420
4 2 J3, J4 STUD, TEST PIN PEM, KFH-032-10
5 4 J3, J4 (2 EACH) NUT, BRASS, #10-32 ANY #10-32
6 2 J3, J4 WASHER, STAR #10 BRASS NICKEL ANY, #10EXT BZ TN
7 2 J3, J4 Ring, Lug Ring # 10 KEYSTONE, 8205
8 4 (STAND-OFF) STAND-OFF, NYLON 0.25" (SNAP ON) KEYSTONE, 8831
PARTS LIST
9
dc2199bcfa
DEMO MANUAL DC2199B-C
Simplified Schematic (without Unneeded Components)
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
+VOUT
36V-60VIN
-VOUT
1210
1812
0805
0805
1210
1210
0805
0805
1210
56VOUT / 5.4A
COG
1.25T 1T
1/4W = 1206, 1W = 2512.
Unless otherwise specified:
All resistors are in ohms 0603.
All capacitors are in microfarads 0603.
All capacitors are 25V.
1/16W = 0402, 1/10W = 0603, 1/8W = 0805,
NOTE:
4.7uF 25V AVX, 12063C475KAT2A (X7R 1206)
2.2nF 250V Murata GA343QR7GD222KW01L (X7R 1812)
33uF 63V PANASONIC, EEHZA1J330P (8x10mm)
33uF 80V PANASONIC, EEHZA1K330P (10x10mm)
D41 170V FAIRCHILD, SMBJ170A
L1 Coilcraft XPL2010-102ML
L2 Vishay IHLP4040DZER2R0M11
L3 Wurth 7443643300
L4 Coiltronics SD25-681
0.004 Ohm Susumu KRL6432D-M-R004-F-T5 (1225)
0.008 Ohm Susumu KRL6432D-M-R008-F-T5 (1225)
R110 SUSUMU, RL1632S-1R20-F (1206)
T1 Champs, P26R6-0410-S02
T2 Pulse, PA3493NL
0805
0805
0805
1206
0805
1210
1/2W
4T 10T
2T
1206
1210
50V
0805
ND FG
FG
+VOUT
+VOUT
VIN
-VIN
RS+
-VOUT
UV
VIN
-VIN
ND
-VOUT
+VOUT
PGNDP
SGNDP
SGNDP
SGND PGND
SGND
SGND
PGND
SGNDP
SGNDP
VAUX
PGND
RS-
RS+RS-
VAUX
VCC
VCC
PGND
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
2
Wednesday, November 09, 2016
11
ACTIVE CLAMP FORWARD CONVERTER
LT
DAVID B.
N/A
LTC3765EMSE / LTC3766EGN28
DC2199B-C
WITH DIRECT FLUX LIMIT
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
2
Wednesday, November 09, 2016
11
ACTIVE CLAMP FORWARD CONVERTER
LT
DAVID B.
N/A
LTC3765EMSE / LTC3766EGN28
DC2199B-C
WITH DIRECT FLUX LIMIT
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
2
Wednesday, November 09, 2016
11
ACTIVE CLAMP FORWARD CONVERTER
LT
DAVID B.
N/A
LTC3765EMSE / LTC3766EGN28
DC2199B-C
WITH DIRECT FLUX LIMIT
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
DAVID B.PRODUCTION
2 8-18-14
__
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
DAVID B.PRODUCTION
2 8-18-14
__
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
DAVID B.PRODUCTION
2 8-18-14
__
R151
100
R106
100
FCX491TA
Q27
C119
1nF
C34
4.7uF
100V
C10
4.7nF
630V
1206 Q12,13
Si7190DP
C102
0.1uF
LTC3766EGN
U2
ITH
7
FG 2
SW 23
FB 6
GND
14
IS+ 18
IS- 17
SG 1
VCC 28
PT+
26
PT-
25
REGSD
16
FS/SYNC
15
SS
9
MODE
4
PGND
27
VIN 22
NDRV 21
IPK
10
PHASE
5
VS+ 12
VS- 13
VSOUT
11
RUN
8FGD/SWB 20
VSEC 3
SGD
19
VAUX 24
T2
PA3493NL
3
1 6
4
R148
100
R101
100
R77
6.81K
R69
46.4K
C73
1nF
D34
ES1PD
Q14,15
Si7172DP
C116
4.7uF
1206
R102
0.008
1225
C72
0.1uF
+VIN
D42
27V
R117
12.7K
C3,4,5,6
4x4.7uF
100V
R68
2.15K
C76
3.3nF
-VIN
R139
26.7K
Q29
IRF6217
+
C1,22
2x33uF
80V
C55
1nF
D1
ES1PD
C66
47nF
200V
1206
C105
0.22uF
D37
BAS21
R115
49.9K
1206
C75
100pF
R154
2.2
1206
Q8,9
BSC190N15NS3
R42
1K
T1
P26R6-0410-S02
13
9
14
8
2
6
R114
28.7K
R29
100K
C80
1nF
R149
100
R23,24
2x51
1206
R18
95.3K
R4,5
33.2K
2512
R41
56.2K
R121
133K
D30
ZHCS506
C111
0.22uF
D38
BAS21
R123
39.2K
C71
1uF
16V
R118
681K
L2
2.0uH
C11
15nF
R46
604
C30
2.2nF
250V
LTC3765EMSE
U1
NDRV 14
VCC
3
PG 2
IN+ 15
IN- 16
RUN
12
AG 4
DELAY
6
IS- 7
GND
17
IS+ 8
FS/UV
10
SSFLT
13
PGND
1
GND2
9
RCORE
11
ISMAG
5
C101
220pF
C77
10uF
R1
0.33
2512
R110
1.20
1206
R125
17.4K C79
4.7nF
+
C25,26
2x33uF
63V
C51
220pF
630V
1206
C78
33nF
R153
7.5K
Q28
FDC2512
C113
33nF
C106
150pF
250V
L1
1.0uH
R75
6.81K
R136
0.004
1225
R137
10K
1206
R127
10K
1206
C112
0.22uF
200V
D29
ZHCS506
R140
178
1/8W
L4
680uH
C103
1.0nF
C118
470pF
D41
170V
R22
3.48K
R107
100
L3
33uH
R109
10K
R53
6.8
1206
C24
1uF
16V
R7
CMDSH05-45
C2
4.7uF
100V
R150
14.3K
R108
2.37K
10
dc2199bcfa
DEMO MANUAL DC2199B-C
SCHEMATIC DIAGRAM
Full Schematic, Page 1
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
+VOUT
36V-60VIN
-SENSE
+SENSE
-VOUT
1210 1210 1210
1210
1812
73437343
0805
0805
1210
0805
0805
1210
0805
56VOUT / 5.4A
COG
7343
1206
1.25T 1T
1206
0805
0805
0805
0805
1206
1206
1206 7343
0805
ITH-
1210
RUN
1/2W
1210
1210
1/4W = 1206, 1W = 2512.
Unless otherwise specified:
All resistors are in ohms 0603.
All capacitors are in microfarads 0603.
All capacitors are 25V.
1/16W = 0402, 1/10W = 0603, 1/8W = 0805,
NOTE:
4.7uF 25V AVX, 12063C475KAT2A (X7R 1206)
2.2nF 250V Murata GA343QR7GD222KW01L (X7R 1812)
33uF 63V PANASONIC, EEHZA1J330P (8x10mm)
33uF 80V PANASONIC, EEHZA1K330P (10x10mm)
D41 170V FAIRCHILD, SMBJ170A
L1 Coilcraft XPL2010-102ML
L2 Vishay IHLP4040DZER2R0M11
L3 Wurth 7443643300
L4 Coiltronics SD25-681
0.004 Ohm Susumu KRL6432D-M-R004-F-T5 (1225)
0.008 Ohm Susumu KRL6432D-M-R008-F-T5 (1225)
R110 SUSUMU, RL1632S-1R20-F (1206)
T1 Champs, P26R6-0410-S02
T2 Pulse, PA3493NL
ND
VS+
VS-
VCP
VCC
FG
FG
+VOUT
+VOUT
VIN
RUN
IS+
-VIN
IS+
-VOUT
UV
VPK
VIN
AS
RS-
-VIN
RUN
ND
RS+RS-
VAUX
RS+
SWB
VCC
SW
-VOUT
AS
-VOUT
+VOUT
VCC
VA
PGND
PGNDP
SGNDP
SGNDP
SGND PGND
SGND
PGND
SGND
SGND
PGND
FG
PT-
PSS
SSS SYNC ITH
SGND
SGNDP
SGNDP
VCC
CLAMP
RS-
AG
AG1
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
2
Wednesday, November 09, 2016
12
ACTIVE CLAMP FORWARD CONVERTER
LT
DAVID B.
N/A
LTC3765EMSE / LTC3766EGN
DC2199B-C
WITH DIRECT FLUX LIMIT
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
2
Wednesday, November 09, 2016
12
ACTIVE CLAMP FORWARD CONVERTER
LT
DAVID B.
N/A
LTC3765EMSE / LTC3766EGN
DC2199B-C
WITH DIRECT FLUX LIMIT
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
2
Wednesday, November 09, 2016
12
ACTIVE CLAMP FORWARD CONVERTER
LT
DAVID B.
N/A
LTC3765EMSE / LTC3766EGN
DC2199B-C
WITH DIRECT FLUX LIMIT
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
DAVID B.PRODUCTION
2 10-26-16
__
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
DAVID B.PRODUCTION
2 10-26-16
__
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
DAVID B.PRODUCTION
2 10-26-16
__
R137
10K
1206
Q12 Si7190DP
4
5
23
678
1
R52
OPT
1206
C5
100V
4.7uF
R122
0
R111
0
C10
4.7nF
630V
1206
R146
0
C34
4.7uF
100V
R106
100
C119
1nF
FCX491
Q27
1
3 2
R151
100
+
C31
OPT
16V
Q15 Si7172DP
4
5
23
678
1
R138
OPT
R147
OPT
R69
46.4K
R101
100
R148
100
T2
TRANS-PA3493NL
3
1 6
4
LTC3766EGN
U2
ITH
7
FG 2
SW 23
FB 6
GND
14
IS+ 18
IS- 17
SG 1
VCC 28
PT+
26
PT-
25
REGSD
16
FS/SYNC
15
SS
9
MODE
4
PGND
27
VIN 22
NDRV 21
IPK
10
PHASE
5
VS+ 12
VS- 13
VSOUT
11
RUN
8FGD/SWB 20
VSEC 3
SGD
19
VAUX 24
+
C23
OPT
C102
0.1uF
Q24 OPT
4
5
23
678
1
C105
0.22uF
T3
OPT
1 2
34
C69
OPT
630V
Q11 OPT
4
5
2 3
678
1
Q14 Si7172DP
4
5
23
678
1
D34
ES1PD
J3
C73
1nF
E4
-
C76
3.3nF
R107
100
Q31
OPT
1
32
R68
2.15K
D27
OPT
13
E6
R115
49.9K
1/4W
R127
10K
1/4W
R124
OPT
C3
4.7uF
100V
C74
0
R117
12.7K
D40
1N4148WS
1 2
E1
+VIN
C72
0.1uF
C55
1nF
+
C1
33uF
80V
R8
0
Q29
IRF6217
4
15
2
3
6
7
8
R139
26.7K
C6
4.7uF
100V
E2
-VIN
J4
R77
6.81K
R103
0
Q13 Si7190DP
4
5
23
678
1
+
C22
33uF
80V
+
C26
C9
OPT
R49
0
C66
47nF
200V
1206
R42
1K
Q8 BSC190N15NS3
4
5
2 3
678
1
8
14
9
2
613
T1
P26R6-0410-S02
C75
100pF
R6
OPT
0603
Q23 OPT
4
5
23
678
1
R119
OPT
R41
56.2K
C111
0.22UF
0805
R4
33.2K
2512
R18
95.3K
R24
51 1206
R149
100
C80
1nF
R29
100K
R108
2.37K
R114
28.7K
Q3
OPT
3
1
2
R113
OPT
C103
1.0nF
R23
51 1206
R118
681K
R51
OPT
1206
R84
OPT
C71
1uF
16V
R123
39.2K
+
C68
OPT
16V
D30
ZHCS506
13
R121
133K
R154
2.2
1206
D42
CMDZ5254B
12
C30
2.2nF
250V
R126
OPT
R46
604
C11
15nF
D1
ES1PD
1 2
L2
2.0uH
R109
10K
C8
OPT
R7
CMDSH05-45
1 2
R3
0
C77
10uF
R116
OPT
1206
D28
OPT
13
C101
220pF
LTC3765EMSE
U1
NDRV 14
VCC
3
PG 2
IN+ 15
IN- 16
RUN
12
AG 4
DELAY
6
IS- 7
GND
17
IS+ 8
FS/UV
10
SSFLT
13
PGND
1
GND2
9
RCORE
11
ISMAG
5
R112
0
C79
4.7nF
R125
17.4K
R110
1.20
1206
R1
0.33
2512
R76
OPT
D41
SMBJ170A
12
R75
6.81K
+
C25
33uF
63V
E3
+
L1
1.0uH
R43
0
C106
150pF
250V
C113
33nF
Q28
FDC2512
3
4 1
2
5
6
C78
33nF
C51
220pF
630V
1206
+
C7
OPT
16V
R5
33.2K
2512
R102
0.008
1225
R140
178
1/8W
D29
ZHCS506
13
C70
OPT
C112
0.22uF
200V
C4
100V
4.7uF
R136
0.004
1225
R10
0
2512
R2
0
R53
6.8
1206
E5
L3
33uH
R22
3.74K
R120
OPT
C118
470pF
R150
14.3K
Q9 BSC190N15NS3
4
5
2 3
678
1
R9
0
E7
C2
4.7uF
100V
+
C33
OPT
16V
C24
1uF
16V
AG
AG1
11
dc2199bcfa
DEMO MANUAL DC2199B-C
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
SCHEMATIC DIAGRAM
Full Schematic, page 2
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
OPTIONAL CIRCUITS
ACTIVE SNUBBER
VCC FROM T1
AC DRIVER PEAK CHARGE VCC
ITH-
HD2X7-MOLEX
VCCP
SWFG
VCC
RS-
VAUX VA
PGNDPGND
VA
SW
+VOUT VPK
VA
SGND
PT-
PSS
SSS
ITH
SYNC
VS+
VS-
PGNDP PGNDP
PGNDP
RS-
SGNDP
CLAMP
AG AG1
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
2
Wednesday, November 09, 2016
22
ACTIVE CLAMP FORWARD CONVERTER
LT
DAVID B.
N/A
LTC3765EMSE / LTC3766EGN
DC2199B-C
WITH DIRECT FLUX LIMIT
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
2
Wednesday, November 09, 2016
22
ACTIVE CLAMP FORWARD CONVERTER
LT
DAVID B.
N/A
LTC3765EMSE / LTC3766EGN
DC2199B-C
WITH DIRECT FLUX LIMIT
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
2
Wednesday, November 09, 2016
22
ACTIVE CLAMP FORWARD CONVERTER
LT
DAVID B.
N/A
LTC3765EMSE / LTC3766EGN
DC2199B-C
WITH DIRECT FLUX LIMIT
R34
OPT
J1
OPT
5
5
8
8
1
1
2
2
3
3
4
4
7
7
6
6
14
14
13
13
12
12
11
11
10
10
9
9
R35 OPT
PT-
R153
7.5K
R19
OPT SSS
Q2
OPT
2
3
1
6
4
5
R32 OPT
C14
OPT
C17
OPT
200V
1206
VS+
R26 OPT
R33 OPT
ITH-
C19
OPT
D37
BAS21
1 3
R25
OPT
Q4
OPT
R30 OPT
C18
OPT
SYNC
PSS
R31 OPT
R17
OPT
1206
C20
OPT
D35
OPT
12
R15
OPT
2512
R28 OPT
D2
OPT
1 2
L4
680uH
R13
OPT
2512
R14
OPT
2512
VS-
C114
OPT
0805
R27 OPT
OPT
U3
SO16
RES 3
VSS2
15
VDD 16
A1 4
VSS1
8
VSS
1
B1 5
CRX
2Q1 7
R152
OPT
0805
R11
OPT
C13
OPT
D4
OPT
12
C12
OPT
C16
OPT
R12
OPT
C116
4.7uF
1206
ITH
SGNDP
C15
OPT
0805
C21
OPT
0805
Q1
OPT
2
3
1
6
4
5
D38
BAS21
1 3
AG AG1
12
dc2199bcfa
DEMO MANUAL DC2199B-C
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
LT 1116 REV A • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 2016
DEMONSTRATION BOARD IMPORTANT NOTICE
Linear Technology Corporation (LT C ) provides the enclosed product(s) under the following AS IS conditions:
This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT
OR EVALUATION PURPOSES ONLY and is not provided by LT C for commercial use. As such, the DEMO BOARD herein may not be complete
in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety
measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union
directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations.
If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date
of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU
OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS
FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR
ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LT C from all claims
arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all
appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or
agency certified (FCC, UL, CE, etc.).
No License is granted under any patent right or other intellectual property whatsoever. LT C assumes no liability for applications assistance,
customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
LT C currently services a variety of customers for products around the world, and therefore this transaction is not exclusive.
Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and
observe good laboratory practice standards. Common sense is encouraged.
This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LT C applica-
tion engineer.
Mailing Address:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation
